Apparatus for making bolts or the like



Feb. 15, 1938.

L. A. F

RAYER 2,108,709

APPARATUS FOR MAKING BOLTS OR THE LIKE Filed Sept. 24, 1955 9Sheets-Sheet l ATTORNEYS Feb. 15, 1938. L. A. FRAYER APPARATUS FORMAKING BOLTS OR THE LIKE 9 Shets-Sheet 2 Filed Sept. 24," 1955 VINVENTOR. LEE A FFPAYER Mme ATTORNEYS.

Feb. 15, 1938. L. A. FRAYER APPARATUS FOR MAKING BOLTS OR .THE LIKEFiled Sept. 24, 1935 9 Sheets-Sheet 3 INVENTOR. LEE ,4. fTPAYER mvbi $3mmm ATTORNEYS.

Feb. 15, 1938. L, A, FRAYER 2,108,709

APPARATUS FOR MAKING BOLTS OR THE LIKE Filed Sept. 24, 1955 9Sheets-Sheet 4 INVENTOR. LEE A. fTM YE/P ATTORNEYS 1 9 Sheets-She e't 5INVENTOR.

v ATTORNEYS.

L. A. FRAYE'R APPARATUS FOR MAKING BOLTS 03 THE LIKE Filed Sept. 24,1955 m-' ""'"ii'fifw fljfl Feb; 15, 1938.

A55 4. EMYEP v Mam Feb. 15, 1938. A. FRAYER APPARATUS FOR MAKING BC DLTSOR THE LIKE F 'iled Sept. 24, 1935 9 Sheets-Sheet 6 INVENTOR. 15E Ki: 5%59 ATTORNEYS.

Feb. 15, 19.38. PRAYER 2,108,709

APPARATUS FOR MAKING BOLTS OR THE LIKE Filed Sept. 24,1955 9Sheets-Sheet 7 mum Illlll f I INVENTOR- BY 7 LEE A. 55/1 YER JM GemATTORNEYS Feb. l5, 1938. L. A. FRAYER APPARATUS FOR MAKING'BOLTS OR THELIKE Filed Sept. 24, 1955- 9 Sheets-Sheet 8 v INVENTOR. LEE A. Fk YER M;Mn m fief 27614 5615' ATTORNEYS Feb. 15, 1938. v L A FRAYER 2,108,709"

' APPARATUS FOR MAKING BOLTS OR THE LIKE Filed Sept. 24, 19,35 9Sheets-Sheet 9 INVENTOR.

* I LEE-A /"7?AYEF? ATTORNEYS Y mmwgm.

Patented Feb. 15,1938

APPARATUS FOR MAKING ours on 'rnn Lee A. Frayer, Kent, Ohio, assignor toThe Lamson & Sessions Company, Cleveland, Ohio, a

corporation of Ohio Application September 24, 1935, Serial No. 41,908 I18 Claims.

ing different portions thereof, and wherein the. rolling, knurling andthreading are carried out as a substantially continuing operation.

16 Another object of the invention is to provide improved apparatus, ofthe type referred to, having novel feed and transfer mechanism forhendling the blanks upon which the operations are performed.

improved bolt making apparatus embodying a pointing device and amechanism for feeding blanks thereto, including means adapted to gripeach blank while it is being operated upon by 25 the pointing device.

-A further object of the invention is to provide improved bolt makingapparatus wherein a pointing device is shiftablerelative to a blankgripping device to bring the pointing device into operativeengagementwith the blank held by the gripping device, and wherein the gripping ofthe blanks by the gripping device is responsive to shifting of thepointing device.

Still another object of the invention is to provide novel transfermechanism for a multiple station machine, wherein a. bar having blankengaging means is arranged for movement longitudinally and rotarily ofits axis.

A further object of the invention is to provide novel transfermechanism, of the type referred to, wherein the means for actuating thebar includes universal movement linkage connected therewith.

It is also an object of this invention to provide a machine for makingbolts, or the like, embodying a. die mechanism and a mechanism forsupplying blanks thereto and wherein the drive means for at least one ofsaid mechanisms includes an overload responsive device.

Other objects and advantages of the invention will. be apparent from thefollowing description when taken in conjunction with the accompanyingsheets of drawings wherein Fig. 1 is a plan view, of more or lessdiagrammatic form, showing a bolt making machine em- A further object ofthe invention is to provide (ciao-ii) bodying my invention but with thefeed and transfer mechanism omitted therefrom.

Fig. 2 is an elevation of one end of the machine. Fig. 3 is an elevationof the other end of the machine.

- Fi 4 is a side elevation of the machine.

Fig. 5 is a longitudinal sectional view taken through the machine asindicated by line 55 of Fig. 2. 1

Fig. 6 is a partial plan view of the machine showing the pointing deviceand a portion of the 'blank feeding mechanism.

Fig. 7 is a sectional elevation of the same apparatus taken on line'l-'l of Fig. 6.

Fig. 8 is a plan view of the feed and transfer it mechanism.

Fig. 9 is an elevational-view'thereof.

Fig. 10 is an elevation showing one end of the feed and transfermechanism. i

Fig. 11 is an elevation at the opposite end of the transfer mechanism.

Fig. 12 is an elevational view, of more or less diagrammatic form,showing the relative arrangement of the pointing device and the diemechanism.

Fig. 13 is an elevation showing one of the blanks upon which the presentapparatus is' adapted to operate.

Fig. 14 is an elevation showing the same blank after the pointingoperation has been performed thereon.

Fig. 15 is an elevation showing'the blank after the same has beenknurled and threaded by my improved apparatus.

Fig. 16 is a partial plan view showing another bolt making machineconstructed according to my invention Fig. 17 is ah end view thereof.

Fig. 18 is an end view, of more or less diagrammatic form, showing therelative arrange- 4o ment of the different mechanisms of the machine.

Fig. 19 is a sectional view taken through the nutting mechanism of themachine, as indicated by line 9-l9 of Fig. 16, and

Fig. 20 is a sectional view 01' the transfer mechanism taken on line20-20 of Fig. 16.

In the accompanying drawings I have shown improved apparatus for makingbolts or thelike. and forthe purposes of the present disclosure moredetailed reference will be made thereto. It will be understood, ofcourse, that the invention may be embodied in various other arrangementsand devices. a I

My improved b6lt making machine comprises a plurality of mechanisms, tobe described in detail hereinafter, which function in cooperatingrelation and in succession such that the various steps are carried outon the blanks automatically and as substantially one continuingoperation. These mechanisms include a. rotatable and shift- "able diemechanism 13 which operates on the delivered after the pointingoperation has been performed thereon by the device l3. The mechanism l4may include dies for rolling the blank to substantially accurate form,dies for forming a thread on a portion of the blank, such as the threadi3 of the blank shown in Fig. 15, and dies for knurling another portionof the blank as indicated at l3 in Fig. 15. My improved machine.a1so.includes a feed and transfer mechanism II for feeding the blanksto the pointing device and transferring the same from the pointingdevice to the die mechanism l4,

As shown in Figs. 1 and 2 my improved machine may be provided with asuitable frame 23 which forms a support for the various parts andmechanisms of the machine. A forwardly projecting part 2| of the frameprovides a support for the feed and transfer mechanism l3 and anoppositely extending part 22 of the frame pro- 0 vides a support for agear box 23. .The lower part'of the frame may be hollow as shown in Fig.5, to provide a' casing 23 in which is disposed a cam arrangement 23. Anintermediate portion of the frame is provided with laterally spaced.

ways 21, which slidably receive a movable head 23. This movable headprovides a mount for the die mechanism l4 and the pointing device 13,and is adjustable relative to the feed and transfer-mechanism l3 so asto accommodate the machine for .work upon different length blanks. Thehead 23 may be adjusted and held in a desired position relative to theframe portion 2| and to the feed and transfer mechanism l3 by means of asuitably arranged adjusting rod 23. The feed and transfer mechanism 13is carried by the frame portion 2! and extends transversely adjacent thepointing device l3 and the die mechanism i4. This mechanismincludes atransversely extending member 33 having a groove or guide channel 3|shaped to receive the head ends of the blanks and to support the blankswith the stem ends thereof extending toward the die devices l3 and I4. Asupply of blanks may be contained in a suitable magazine 32 which isarranged to feed blanks in succession to the guide channel 3|. Thefeeding of the blanks fromthe magazine to the guide channel may becontrolled by a reciprocating shuttle-like member i4 which operates toremove an individual blank from the lower end of the magazine and topush the blank along in the guide channel 3| to a position opposite orin axial alignment with the pointing device l3. In Figs. 7 and 8 of thedrawings 1 show a blank 33 in the position just mentioned. As the blank33 is removed from the magazine 32 and pushed'al'ong theguide channel 3|toward the pointing device I3 the projecting stem end of the blankengages a transverse bar 33 which guides and supports this end of theblank.

' The pointing device I3 is shiftable as a unit toward the feed andtransfer mechanism of the blank 35, it is necessary be gripped and heldduring the pointing operaas to be brought into engagement with the stemof the blank to operate thereupon. The pointing device may include arotatable head 33 having suitable cutting tools 33 mounted thereon forengagement with the stem of the blank to form the chamfer l2 thereon.The'rotary head 33 is mounted upon a drive shaft 43 which is in turnmounted in spaced bearings 4| and 42 carried by a. sleeve 43. The shaft43 projects rearwardly from the sleeve 43 and into the gear box 23. Thisprojecting portion of the shaft is splined as indicated at 44 so as tohave an extensible driving connection with a gear 43 contained in thegear box 23. The sleeve 43 is'slidably mounted in an opening 43 ofthehead 23 so that movement of the sleeve toward or from the feed andtransfer v mechanism I3 will move the tool carrying head 33 toward oraway from the blank 35.

At the forward end of the sleeve 43, I provide a hollow member 41 whichis disposed around the rotary head 33. This hollow, member is alsoslidable in the opening 43 and may be an extension of the sleeve 43. Theend wall of the member 41 is provided with a guide 43 having an opening43 which receives the .stem end of the blank 33 when the rotary head 33is shifted toward the feed and transfer mechanism 13 by the movement ofthe sleeve 43 in the opening 43. The guide bar 33 mentioned above assupporting and, guiding the stem end of the blank 35 may be mounted uponthe end wall or face of the hollow which is operated by mechanism to bedescribed hereinafter.

To enable the rotary head 33 of the pointing device to operate properlyupon the stem end that the blank tion. For the purpose of gripping ablank I provide the transverse member 33 with a movable plunger 34 whichacts as a gripper. For operating this plunger in timed relation to'theshifting of the pointing device, I provide means which actuates thegripper in response to the shifting of the pointing device. This means,as best shown in Figs. 6 and '1, includes a pivoted bell crank lever 55,which has the arm 53 thereof connected with the plunger 54 by means'of ath'rustlink 31. The arm 53 of the bell crank lever carries laterallyspaced hollow heads 33 which are disposed in spaced opposing relation tothe hollow member-41 of the pointing device. Plungers 33 project fromthe hollow heads 39 and are normally held against movement into theheads by means of compression springs 3|, the initial compression ofwhich may be adjusted by means of screw plugs 32. 33, spaced laterallyto correspond with the spacing of the heads 33, are disposed between thehollow member 41 of the pointing device and the plungers 33. These pushrods serve to transmit motion between crank lever 55 of the blankgripping means.

From the arrangement as thus far described, it will be seen that when ablank is fed from the magazine 32 and advanced by the shuttle 34 to theposition shown in Fig. '1, the blank is ready to be pointed by thepointing device "I. With the blank in this position the sleeve 43 isoperatd through the'rackand pinion members 33 Push rods the pointingdevice and the bell.

with 5 a pinion. 3| cooperates? The pinion may be carried by a rockshaft 52 thrust link 51 to push the'gripping plunger 54 into grippingengagement, with the blank.

Asmovement of the pointing device continues,

the gripping force exerted by the plunger! will increase-until thegripping force corresponds with a desired value therefor as determinedby'the adjustment of the compression of the springs 6|. The shifting ofthe pointing device ultimately brings the tools 88 into engagement withthe blank and, as the head 38 rotates continuously, the toolswilloperate to form a chamfer l2 on the blank. The operation of the rotaryhead 38 on the blank is followed by a retracting movement of'the sleeve43 to the left. as seen in Fig. 7, which moves the head 38 and themember 41 away from the blank. The retracting of the pointing devicealso allows the bell crank lever 55 to be rocked in a reverse directionby the compression spring 65, thereby releasing the gripping action ofthe plunger 54 on the blank. Immediately following thesrelease of theblank by the gripping plunger 54, the transfer mechanism operates toshift the blank from the pointing station to a position. adjacent thedie. mechanism l4 by which subsequent operations are to be performed onthe blank.

As best seen in Figs. 8 and 9 of the drawings, the transfer mechanismincludes a bar 68 which is mounted for both longitudinal and rotarymovement and which carries a blank engaging member 8d. The blankengaging member is connected to the bar intermediate its ends andextends at substantially right angles to the axis of the bar so thatrotary movement of the bar will result in an arcuate sweeping of thismemher to cause thebifurcated outer end it thereof to engage ordisengage the blank. The connection between the member 69 and the bar 68maybe adjusted by providing the member with a slot H through which theclamping screws or bolts I? extend.

To provide for this rocking or rotary movement of the bar '68, I employspaced supports M and H5 in which the bar is rotatably mounted. Thesupports it and 15 may be in the form of bearings carried by bracket itwhich is mounted upon the forwardly extending frame portion M. Thebearing l5 may be a bearing of usual construction in which a stem partll of the bar 038 is rotatable and slidable. The hearing it, however, isprovided with a rotatable bearing sleeve Tl which is internally splinedto receive the splined portion 18 of the bar 68. The splined portion 78of the bar is slidable in the bearing sleeve l! but is non-rotatablewith respect thereto. The bearing sleeve may, if desired, be providedwith a cup-like cover 19 into which the splined portion 78 of the barmay extend. The

bearing sleeve 11 is held against axial move ment by the bearing bracketit and is adapted to be rotated or oscillated in the bearing bracket bymeans 01" its lever arm 80. By imparting swinging movement to the leverarm 80, by means to be explained hereinafter, the bearing sleeve TI isoscillated in the bearing I4 and, by reason of the splined'connectionbetween the bearing sleeve 11 and the bar 68, the latter will also berotated about its axis. Rotation .of the 'bar will cause thebifurcatedend of the member 69 to engage or disengage a blank, dependingupon thedirection of rotation of the bar.

For imparting longitudinal movement to the bar 68, I provide linkagewhich includes a lever 82 mounted upon a rock shaft 88. The-free end ofthe lever 82 carries a'unlversal joint element such as the ball 84 towhich one end of a link is swiveled on'a ball 88 which is carried by astud 81 mounted on'the bar 88. The ball con nections provided betweenthe lever 82 and the link 85, and between the link and the bar 68,

provide a universal joint operating connection for impartinglongitudinal movement to the bar without interfering with the rotarymovement which must be imparted thereto for swinging the blank engagingmember. 89.-

The operation of the transfer mechanism is timed with respect to-theoperation of the pointing device, and immediately following the releaseof the blank 35 by the gripping plunger 54,

v the bar 68 is rotated to swing the member 69 into engagement with theblank. Longitudinal movement is then imparted to the bar 68 through theuniversally connected linkage and the blank is shifted'from the pointingstation to a pos'ition opposite the die mechanism N. In Fig. 8 of thedrawings the transfer mechanism is shown as having just moved a blank tothe position opposite the die mechanism. As soon as the blank has beentransferred to this position rotary movement is again imparted to thebar 68 but in a direction to swing the member 69 out of engagement withthe blank.

As mentioned above the die mechanism It may include die members forrolling, knurling and threading the blank, and while various die deisswiveled. The other end of the link 85 l vices may be used in. carryingout these steps, I

mechanism comprises a pairof die holders til in v the form of rotatabledrums upon which the complementaldie members are mounted, as will bepresently explained. The drums at are carried upon shafts W and 9B whichare arranged with their axes in parallel relation as shown in Fig. 5;.The shaft M is rotatably mounted in bearings ti and 92 provided in thelower part of the head it. The shaft W is mounted in bearings 93 and Wprovided in a block 95 which is received. in an opening of the head 28-and disposed immediately above the part of the head in which theshai't Mis mounted. Theblock 95 is adjustable in the opening of the head 28 sothat the spacing of the shaft relative to'the shaft 89 may be varied asrequired for best operation of the dies and by the characteristics ofsame speed and in a desired direction. For driving the die mechanism Iemploy an extensible connection provided by the splined portion 99 ofthe shaft 89. This splined shaft portion extends rearwardly into thegear casing 23 and is slidable in an internally splined portion of thecountershait Hit.- The extensible driving connection thus providedbetween the spline shaft 99 and the countershai't "it permits the head28 to be adjusted in the guides 21 while the driving connection to thedie device is maintained.

As shown in Fig. 12 of the drawings the drums 88 rotate in the samedirection causing the blank engaging'portions of their periphery to movein opposite directions so that when the ,blank 88 is disposedtherebetween it will be rotated upon its axis in a manner well known inthe art. The

drums 88 may carry a pair of complemental die members I82 inthe form ofsegmental blocks set into the periphery of the drums. The die membersI82 may consist of a pair of plain surfaced shaping or smoothing dieswhich roll the "members I88 which act on the blank immediatelyfollowingthe knurling dies I88. The die members I88 may be threadingdies of well known construction having ridges thereon. to cut or rollthe thread I8 on the stem portion of the blank. The lower drum 88 mayhave a clearance recess I81 formed as a notch in the periphery thereofimmediately following the threading die I88. 'Ihis'clearancerecesspermits the blank 88 to drop-out from b-yween the drums after the blankhas been released from between the diemembers I88.

when the blank 88 has been shifted to a position oppositethe die deviceI8 by the transfer mechanism, it is necessary to impart axial movementto the blank-to move and hold the stem thereof inwardly between thedrums 88 so that the die members carried by the latter can act on thestem portion. For causing this axial movement of the blank I provide apushing device which may comprise. an arm I-88 carried upon a laterallyslidable rod II8. The arm I88 is provided with a recess III in which aninsert -II2 is freely rotatable. The insert is also provided with arecess II8 which is of a size and s ape to receive the head portion ofthe blank when the arm I88 is shifted toward the die device by the rodII8. The insert being freely rotatable in the arm I88 permits the blankto be rotated on its axis by the complemental die members. operating inthe manner explained above. Axial movement may be imparted to the.,rodII8 by means of a lever II8 to which the rod is connected by means ofthe collar I I8 and the link I I 8.

I- have previously referred to a cam arrangement 28 contained in ahollow intermediate part 28 of the frame of my machine, as shown inFigs.

4 and 5. This cam arrangement is provided for supplying motion to thepointing device and to 'the various parts of the blank feeding andtransfer mechanism as-will now be explained. The

cam arrangement consists of four drums I I1, II8, H8, and I28, all ofwhich are mounted upon a drive shaft I2I. This shaft may be supported inthe-bearings I22 and may be driven from the countershaft I88 by means ofa chain or belt I28 extending around sprockets or pulleys I28 and I28mounted respectively on the cam shaft and the countershaft. Each-of thecam drums has a suitable cam face or groove thereonwhich impartsm'otionto a cam follower cooperating therewith. The cam follower for the camdrum II1 consists of a roller I21 carried by an arm I28 which is mountedona rock shaft I28. Similarly.

the cam followers for the drums II8, II8, and I28 consist of rollersI88, "I, and I82 carried respectively by levers I88, I88, and I88mounted upon corresponding rock shafts I88, I81, and I88. The rockshafts I28, I88, I81, and I88 are mounted in suitable bearings providedon the frame, and projected outwardly of such bearings as shown in Figs.3 and 4.

The function of the cam H1 is to operate the blank pushing arm I88 andtherefore I connect the lever II8 with the cam follower I21 whichcooperates with this cm. This connecting means may be in the form oflinkage comprising the rod I88 and a member I mounted on the' The cam II8 supplies the arcuate movement.

which rotates or oscillates the bar 88 of the transfer mechanism aboutits axis to cause swinging movement of the blank engaging member 88 asexplained above. This arcuate movement is supplied to the bar 88 throughthe rocking bearing sleeve 11, to which the cam follower I88 cooperatingwith the cam, I I8, imparts movement. The cam follower I88 is connectedto the lever arm 88 of the rocking bearing sleeve by means 'of the, linkI88 and the lever I88 mounted on the rock shaft I88.

The function of the cam H8 is to shift the pointing device into and outof engagement with a blank held by the gripping plunger 88, and toenable the cam to perform this function I provide linkage which-is.connected with the cam follower I8I. This linkage comprises a lever I88mounted on the rock shaft I81 and a link I88 connecting this lever withthe rock shaft 82 of the pinion 8I through anoverload release de- -vice'I81 mounted on thepinion shaft 82 so as to act as a lever.

'Ihe purpose-of the M128 is'to operate'the blank feeding shuttle 88 andto' impart longiis actuated fromthe cam I28 by movement transmitted fromthe rock shaft -'m of the cam follower I82 through the overload releasedevice I8I acting as a lever, and through a link I82 which connects thedevice I8I with a lever I88 of the shaft 88. The pivotal connectionsbetween the ends of the link "land the levers m and m are preferablyball swivels I88.

From the cam arrangement just described it I will be seen that thepointing device and the various parts of the blank handling mechanismwill be operated in timed relation such that a blank will beautomatically fed from the magazine 82 to the pointing station and,"after the pointing operation has been performed thereon, will be.

transferred to a position opposite the die device I8 and then shiftedaxially to insert the stem the f between the drums carrying the diemembers. It will also be seen that while one blank is bein transferredfrom the pointing station to been performed thereon, I may provide aknock- 1 out device which may be used instead of, win conjunction with,the above mentioned recess I01 of the lower die drum 88. This knock-outdevice may be constructed and arranged in accordance with well knownpractice, and as shown in Fig. 6,

may comprise a pin I65 which is shiftable axially by means of thecompression spring I56.

. Power for the operation of my improved bolt "making machine may besupplied from any suitable source, and, if. desired, may be furnished byan independent electric motor I60. When such an electric motor isemployed it may be mounted upon a suitable bracket I8I carried'by theframe of the machine and may be drivingly connected 2 with thecountershaft I00 by means of pulleys 1 I82 and I68 and a belt I84extending therearound. As explained above; power may be transmitted tothe pointing device I0 and the die mechanism I8 through splined shafts84 and 99, and power may be transmitted to the cam shaft I2I through thebelt or chain I28. The powerfor the pointing device is transmitted tothe gear 46, with which the splined shaft 48 cooperates, through a geartrain compris n ears I66 and I66, the gear I86 90 meshing with a gearI61 of the countershaft I 80 and the gear I 86 meshing with the gear 86.7

At diflerent points of the present description I have referred to anoverload release device servingas a power transmitting member. Thelevers 85 Ill, I41 and III have been referred to as being devices ofthis kind. These devices may also be used at various other points of themachine where their use might be found to be desirable. The purpose ofanoverloadv release device of this character is to prevent breakage of themachine should an overload occur for any reason. such as the result ofincorrect feeding or positioning of blanks, or as the result of thefeeding of an irregular or wild" blank.

A construction which i have found to be satis- .factory for an overloadrelease device of this character is shown in Figs. 6 and 7 of thedrawings. The device as here shown may comprise cooperating membersadapted for relative arcuate 5o movement but normally held against suchmovement by yieldablemeans. The cooperating members, may, as shown inFig. 1, be a hollow casing I10 having a cylindrical opening or chamberI'll therein, and a rotor I12 fitting the cylindrical 5 chamber andoperable therein. The rotor is keyed or otherwise connected to the powershaft 52 and the casing I10 is connected with anotherpower member suchas the link I08. To facilitate connection of the casing with the linkI86 or other available power member, the casing may be constructed withan integral hub- I18 having a connecting stud or pin I14 extendingtherefrom.

The rotor I12 is provided at one point ofits periphery with asubstantially radially extending projection I16 which is of tapered formand has oppositely inclined faces I11. The means for normally preventingrelative rotation between the rotor and the casing cooperateswiththisprojection I16.

The means cooperating with the projection I18 may comprise a pair ofabutment levers I18'which engage the projection and are yieldably heldthereagainst by a plunger I19 slidably mounted in an opening I ofthecasing. The levers I18 may be arranged with one end thereof pivotedon the casing and with their free ends extending toward each other andbearing againstthe oppositely inclined faces I11 of the projection I16.From the arrangement just described it will be 5 seen that theprojection I16 constitutes a cam which cooperates with the levers. I18with the flatter acting as stops or abutments.

The plunger I18 is mounted in a radial projection I8I of the casing inwhich the opening I80 10 is formed. The plunger I19 is preferably hollowand a compression spring I82 isdisposed in the plunger to bear againstthe end wall thereof and against a cover-I88 provided on the projectionI8I. The springIIlZ forces the plunger I19 'ra- 15 dlally inwardly, andthe latter acting on the, rounded portions I08 of the inner ends of thelevers I18, presses the lever ends against the in-, clined faces .of theprojection I18. The levers cooperating in this manner with theprojection 20 I18 normally hold the casing and rotor against relativerotation so that power can be transmitted 0111135851; the device betweenthe link I46 and the When excessive power ,is transmitted through 25 thedevice, the cam action of one or the other of the inclined faces I11against the end of its lever I18, depending on the direction in whichpower is being transmitted, forces the lever end outwardly therebyshifting the plunger I19 -out- 30 mitted from exceeding a predeterminedvalue and thus prevents breakage of machine parts.

If the condition of overload continues the pro- 40 jection I18 may bedisengaged from the levers a number of times as the rotor and easing areoscillated or rotated relative to each other. If the condition ofoverload is removed, the projection I18 will, upon reengagement with thelever- 45 ends, be held by the levers so that further relative movementbetween the rotor and easing will be prevented until another conditionof overload occurs.

If desired a suitable control means may be associated with the overloadrelease device to cause Y operation of signal mechanism or mechanism forv stopping the machine. In the present arrangement I have shown acontrol means suitable for this p p se, comprising a lever I86 extending55 adjacent the projection WI of the casing I10.

I86. This lever may be mounted upon a rock shaft I88 carrying a leverI89 which is arranged to operate a control device, such as an electric 5switch I90, This switch may'have circuit connections I9I extending to asignal device, or to.

arelayor the like for controlling the circuit ofthe driving motor I89.The switchJ90 may'also have a manually operable starting or setting 7button' I92, and a trip or stop button I98 disposed to be engaged andoperated by the lever I89. With this control arrangement it will be seenthat when an overload occurs and the normal operation of the machine isinterrupted, alever I86 tensible driving connection will be actuated tooperate the switch I00. The operation of this switch will result, in asignal being given to indicate that the machine is out of normaloperating condition or in the motor I60 being deenergized to preventfurther operation of the machine. I

In Figs. 16 and 17 of the drawings I have shown another embodiment of myinventio'rr'in the form of a bolt making machine having a pointingmechanism and a die mechanism of the form already described, but havingin addition a device for screwing nuts onto the bolts as they aredelivered from the die device which performs thethreading.

As shown in Fig. 16, the nutting device 200 may be located adjacent thedie device l4 and comprises a spindle 20! which is movable toward. andaway from the transfer mechanism i0. The spindle 20l may be rotated by ashaft 202 having a splined portion 202' affording an exwith anyavailable power member such as the sprocket 203. The shaft 202 isrotatably mounted in bearings 204 which are mounted in an axiallyshiftable sleeve 205. This sleeve is provided with a rack 208 with whicha pinion 201 cooperates. -The pinion is carried on a rock shaft 208 towhich movement may be imparted by suitably operated linkage The bar 68'of the transfer mechanism and the guideway for the blanks are madesomewhat longer than shown in Fig. 3 so as to extend adv jacent thenutting device 200. The bar 00' of the transfer device carries a blankengaging member 69, similar to the member 00 and in addition carries ablank engaging member M0 for transferring the blanks from the die deviceH to a position opposite the nutting'device 200. Fig. 19 shows a blank2, threaded hexagon headed bolt, disposed opposite the nuting device.For supporting the threaded stem portion of the bolt the guideway of thetransfer device may have a laterally extending arm portion 2I2 whichforms a rest for the stem portion of the blank.

When a. blank 2 has been shifted to a position opposite the nuttingdevice the linkage 200 rotates the pinion 201 to cause outwardshiftingof the sleeve 205. This shifting of the sleeve moves the spindle20l outwardly to cause a nut 2I3 in the lower end of the magazine 2 tobe impaled on the pin 2l5 which is slidable in the spindle and projectstherefrom. Further out-- ward movement of the spindle carries theimpaled nut into engagement with the blank 2 and the rotation of thespindle causes the nut to be screwed onto the threaded portion of thestem. The sleeve 205 is then retracted to move the spindle and pin awayfrom the blank. If desired a spring 2l6 may be provided in the shaft 202to permit yielding of. the pin 2|! as the nut is screwed onto the blank.After the sleeve and the spindle have been retracted, the blank with thenut screwed thereon is free to be expelled laterally through the openend of the guideway by a succeeding blank being brought to the nuttingposition by the member 2|0.

V succession to a pointing device, and to a die de- From the foregoingdescriptionand the accompanying drawings it will now be readily seenthat I have provided improved bolt making apparatus wherein blanks areautomatically fed in vice having means for rol1ing, knurling andthreading theblanks as a substantially continuing operation. It will beunderstood further -hollow means, and means blank held by in the form ofa that I have provided a novel arrangement for the die device and thepointing device, and have provided novel feed and transfer mechanism forhandling the blanks, including novel means for gripping the blanksduring the pointing operation.

While I have illustrated and described the improved apparatus of myinvention in a somewhat detailed manner, it should be understood,however, that I intend my invention to include and operable to grip ablank, non-rotatable hollow means shiftable toward the work support andhaving guide means thereon for cooperation with the blank, a rotary diedevice in said hollow means and shiftable therewith into position tooperate on the blank, means forshifting said for rotating said diedevice. v 2. In apparatus for making boltsor the like, the combinationof a frame, work supporting means including a device for gripping oneend of a blank and a laterally extending part forming a rest and guidefor the other end thereof, a non-rotatable hollow member movable towardsaid gripping device, said guide being carried by said hollow member andmovable thereby toward the gripping device, a rotary die device in asaid hollow member adjacent said guide and shiftable toward the grippingdevice to operate on a the latter, slidable means operable to causemovement of the hollow member with said guide thereon and said diedevice toward the gripping device, means for operating said slidablemeans, and means for drivin said die device.

3. In apparatus of the cha acter described, the combination of a worksupport having a plunger operable to grip and hold a blank while a dieoperation is performed thereon, a rotary die device axially shiftabletoward said support into position to operate on a blank held by thegripping means, means for causing such shifting of the die device, andmeans for causing operation of the gripping plunger in response toshifting of the die device comprising a pivoted lever having one armthereof connected with said plunger and an operating connection betweenthe other arm and the die device.

4. In apparatus of the character described, the combination of a worksupport including means operable to grip a blank, hollow means shiftabletoward the work support and having an opening adapted to receive aportion of a blank held by the gripping means, a rotary die device insaid hollow means and shiftable into position to operate on said blank,means for rotating said die device, means for shifting said hollow meansand die device, and means for causing operation of the gripping meansinresponse to shifting of said hollow means.

5. In apparatus of the character described, the combination of a worksupport having amember movable to grip a blank, a rotary die deviceshiftable toward said support to operate on the blank,

comprising a pivoted lever, ,a link connecting one arm of the lever withthe gripping member and an operating connection between the other arm ofthe lever and middle device, said link and one means operable to moveindividual blanks along arm forming a toggle adapted to cause variationin the gripping pressure in accordance the extent of shifting of the diedevice.

6. In a multiple station machine of the char acter described having aplurality of spaced work stations, a transfer mechanism adjacent saidstations and operable to transfer blanks from one work station toanother comprising a bar mounted for movement longitudinally androtarily of its axis and having means for engaging ablank,

and means for imparting rotary and longitudinal movements to said bar tocause engagement of the blank and shifting thereof from one workstationto the other.

7. In a multiple station machine of the character described having aplurality of spaced work stations, a transfer mechanism adjacent saidstations and operable to transfer blanks from one work station toanother comprising a rotatable member, a bar siidable but non-rotatablein said member and having means for engaging a blank, means for"imparting rotary movement to said member to cause'the blank engagingmeans to engage and disengage a blank, and means for impartinglongitudinal movement to said bar to cause shifting ofthe engaged blankfrom said one-work station to the other.

8. In a multiple station machine of the character described having aplurality of spaced-work stations, a transfer mechanism adjacent saidstations and operable to transfer blanks from one work station toanother comprising a rotatable bearing, a bar splined in saidbearing'for longitudinal movement therein and rotary movement therewith,said bar having means for engaging a blank, means for imparting rotarymovement to the bearing to cause the blank engaging means to engage anddisengage a blank, and means for imparting longitudinal movement to saidbar to cause shifting of the engaged blank from said one work station tothe other.

9. In amultiple station machine of-the character described having aplurality of spaced work stations, a transfer mechanism adjacent saidstations and operable to transfer blanks from one work station toanother comprising a rotatable member, a, bar slidable but non-rotatablein said member and having means for engaging a blank, means forimparting rotary movement to said member to cause the blank engagingmeans to engage and disengage a blank, and means having flexibleconnection with said bar for imparting longitudinal movement thereto to'cause shifting of the engaged blank from said one work station to theother, said connection being adapted to also permit said rotarymovement.

10. In a multiple station machine of the character described having aplurality of spaced workstations, a transfer mechanism adjacent saidstations and-operable to transfer blanks from'one work station toanother comprising a rotatable member, abar slidab'le but non-rotatablein said member and having means for engaging a blank. means forimparting rotary movement to said member to cause the blank engagingmeans to engage and disengage a blank, and universal movement linkagefor imparting longitudinal movement to said bar to cause shifting of theengaged blank from said one work station to the other.

11. In bolt forming apparatus the combination of a pointing device athreading device spaced laterallytherefrom, a guideway for blanksextending past said pointing and threading devices, a magazine adaptedto contain a supply of bla 'nks,

said guideway to a position to be-operated upon by said pointing device,a bar mounted for rotary,

- and longitudinal movement and having means for engaging a blank, andmeans for causing rotary and longitudinal movement of'said bar totransfer a blank from the'pointing position to a position to be operatedupon by the threading device. r I I 12. In bolt forming apparatus thecombination of a. pointing device, a threading device spaced laterallytherefrom, a guideway for blanks .extending past said pointing andthreading devices, a magazine adapted to contain'a supply of blanks,means operable to move individual blanks along said guideway to aposition adjacent the pointing device, means providing for movement ofthe pointing device into operating engagement with a blank in saidposition, means responsive to movement of the pointing device forgripping the blank, and means for transferring the blank from thepointing position to a position adjacent the threading device.

13. In a machine for making bolts and the like, a frame having partsproviding laterally spaced supports and an intermediate part providing aguideway, power means on one of said supports, a head adjustably movablealongsaid guideway and providing a mount for a plurality of laterallyspaced rotary die devices, a transfer 'mechanism mounted onthe 'ther ofsaid suppOrts to extend laterally in cooperating relation to said diedevices and operable to transfer blanks from one die device to'th'eother, means for adjusting said 'head toward and from the transfermechanism, and a splined drive connection for operating said die devicesfrom said power means.

it. In a machine for making bolts and the like, a frame having partsproviding laterally spaced supports and an intermediate part providing aguideway, power means on one of said supports, a head adjustably movablealong said guideway and providing a mount for a plurality of laterallyspaced rotary die devices, a transfer mechanism mounted on the other ofsaid supports to extend laterally in cooperating relation to said diedevices and operable to transfer blanks from one die device to theother, means for adjusting said head toward and from the transfermechanism, and a .splined drive connection for operating said diedevices from said power means, one of said die devices having arotatable blank-pointing cutter and a supporting sleeve therefor whichis reciprocable in said head for moving the cutter toward and from saidtransfer mechanism. v

15. In apparatus of the character described the combination of a pair ofcooperating thread rolling dies rotatable about vertically spacedsubstantially parallel axes and having a blank receiving spacetherebetween, a rotatable and axially shiftable pointing die spacedlaterally from said threading dies and having a blank receiving openingon substantially the same horizontal plane as said blank receivingspace, and a transfer mechanism extending laterally adjacent said blankreceiving space and opening and operable to transfer blanks from thepointing .die to the threading dies.

16. In apparatus of the character described the combination of a pair ofcooperating thread "rolling dies rotatable about vertically spacedsubstantially parallel axesv and having a blank receiving spacetherebetween, 'a rotatable and axially shiftable pointing die spacedlaterally from.

8 i said threading dies and having a blank receivingopening onsubstantially the same horizontal plane as said blank receiving space,and a transfer mechanism operable to transfer blanks from the pointingdie to the threading dies, said transfer mechanism including asubstantially horizontal guideway extending adjacent said blankreceiving space and opening and means adapted to engage and move blanksalong said guideway.

17. In apparatus of the character described the combination of-a pair ofcooperating thread rolling dies rotatable about vertically spacedsubstantially parallel axes and having a blank receiving spacetherebetween, a rotatable and axially shiftable pointing die spacedlaterally from said threading dies and having a blank receiving openingon substantially the same horizontal plane as said blank receivingspace, and a transfer mechanism operable to transfer'blanks from thepointing die to the threading dies, said transfer mechanism including asubstantially horizontal guideway extending adjacent said blankreceiving space and opening and a rotatable and axially shiftable meansfor causing movement or blanks along said guideway.

'18. In apparatus of the character described the combination of a pairof cooperating thread rolling dies rotatable about vertically spacedsubstantially parallel axes and having a blank receiving spacetherebetween a rotatable and axially shiftable pointing die spacedlaterally from said threading dies and having a blank receiving openingon substantially the same horizontal plane as said blank receivingspace, and a transfer mechanism operable to transfer blanks from thepointing die tothe threading dies, said trans:- fer mechanism comprisinga substantially horizontal guideway extending adjacent said blankreceiving space and opening, a rotatable and axially shiftable shaftextending substantially parallel with said guideway, and means adaptedto engage and shift blanks along said guideway in response to the rotaryand ,axial movements of said shaft.

LEE A. FRAYER.

